Eating habits, physical activity, nutrition knowledge, and self-efficacy by obesity status in upper-grade elementary school students

Obesity and its related factors among university medical students in Syria: A cross-sectional study

Introduction

Obesity is a worldwide pandemic that has many contributing factors. There is very scarce data available on this issue for the population in Syria. We aim to evaluate the body mass index and related obesity rates of medical students as they are the role model for the general population. We aim to explore the breadth of potential associated factors including psychological, physical activity, dietary, and a broad array of lifestyle and socio-demographic factors.

Methods

This is a cross-sectional study that was conducted at a major university in Damascus. Paper-based questionnaires were distributed that included the International Physical Activity Questionnaire short version and the Depression, Anxiety and Stress Scale.

Results

The mean body mass index was 23.5 (±4.2) kg/m2 with 540 participants enrolled in this study. Males had significantly higher body mass index than females by 2.5 kg/m2 (p < 0.001, χ2 = 47.9, V = 0.3). In our sample, 304 (60.68%) had normal body mass index (18.5-24.99), 40 (7.98%) were considered underweight (body mass index ⩽ 18.5), 120 (23.95%) were considered overweight (body mass index = 25-29.99) and 37 (7.39%) were considered obese. While many factors were found to be significantly associated with body mass index and obesity, only physical activity, depression, having a first-degree family history with obesity and poor dietary habits were associated in regression analyses evaluating all predictors concurrently.

Conclusion

The findings reflect an ongoing epidemic of obesity. Our findings can guide targeted intervention for this young population who will become doctors and health role models in the future. More studies should be conducted to find the best possible ways to tackle this issue in the future.

The effects of proprioceptive exercise training on physical fitness and performance of soccer skills in young soccer players

The purpose of this study is to analyze the effect of proprioceptive exercise training on soccer skills and physical fitness in young soccer players. Nineteen young soccer players participated in the study. Participants were divided into proprioceptive exercises training (PT) and control (Cont) groups. The physical fitness and soccer skill performance test assessed at pre- and posttraining. Balance ability and power significantly improved in both groups after 8 weeks of training (P<0.05). Dribble in the PT group was similar between pre- and posttraining, with a statistically significant difference in the Cont group (P<0.05). There were no significant differences within and between groups according to training in the left and right feet for juggling. The PT and Cont groups did not differ significantly regarding short passes posttraining. However, a significant improvement in long passes was observed in the PT group after training period (P<0.05). Shooting was no different between and within the groups. In conclusion, these inconsistent findings are thought to be due to the applied exercise method, training duration, and the specificity of the physical growth period of the young players. Therefore, it is necessary to increase the frequency and time of proprioceptive exercise training and apply factors for cognitive ability improvement to training programs for young soccer players in future studies. These studies could suggest appropriate training methods necessary to improve the performance of young soccer players.

Physical fitness among children with diverse weight status during and after the COVID-19 pandemic: a population-wide, cohort study based on the Slovenian physical fitness surveillance system (SLOfit)

Background

COVID-19 public health crisis has exerted immediate negative impacts on children's physical fitness, but the longer-term effects are not clear, and the impact on children with excess weight is yet unknown. We examined changes in multiple components of physical fitness in response to COVID-19 imposed restrictions, but also a year after the restrictions were terminated, and compared these trends in groups of boys and girls with normal weight, overweight, or obesity before the pandemic.

Methods

Information was gathered through Slovenia's national fitness surveillance system, and included 41,330 children (19,890 girls), aged 5-17, who had their fitness levels measured yearly from 2019 to 2022. Multilevel linear mixed models, fitted separately for boys and girls, were used to model the individual-level trends over time in centile score for each fitness test across 3 weight groups.

Findings

Overall fitness levels decreased markedly across all weight categories between 2019 and 2020, with the largest decreases in Total Fitness Index observed in children with normal weight and overweight (-8.4 and -7.7 centiles for boys and -8.3 and -8.8 for girls, respectively, p < 0.001). While there was some recovery in the overall fitness level between 2020 and 2022, it remained much lower in 2022 compared to 2019 across most groups, apart from boys with obesity. Fitness components that had the largest impact on general fitness trends were cardiorespiratory fitness, lower body power, body core, and upper body strength.

Interpretation

A severe decline in fitness that has not come close to returning to pre-pandemic levels in most population groups of youth begs for urgent population-wide initiatives that will provide additional opportunities for physical activity to youth. Among vulnerable groups, girls with overweight and obesity deserve a special focus of these policies.

Funding

Horizon 2020 (Grant no. 774548), Slovenian National Research Agency (Grant no. P5-0142), Croatian Science Foundation (Grant no. DOK-2020-01-3728).

Multilevel Factors Associated With Obesity Among South Korean Adolescents Before and During the COVID-19 Pandemic

Background: Coronavirus disease 2019 (COVID-19)-necessitated lockdowns and school closures have limited social interactions among adolescents, which result in unhealthy behaviors. This study compared the multilevel factors associated with obesity among adolescents in South Korea before and during the pandemic. Method: We applied the social-ecological model and analyzed the 2019 and 2020 Korea Youth Risk Behavior Web-based Survey (KYRBS), including middle and high school students. We considered factors at the individual, family, and community levels in the logistic regression. Age and gender-adjusted obesity (body mass index ≥ the 95th percentile) was the dependent variable. Result: The prevalence of obesity slightly increased from 11.31% before the pandemic to 12.48% during it; the odds of obesity were 1.12 times (95% confidence interval [CI] = 1.08-1.16) as high during the pandemic compared to before it. Several individual factors (e.g., age, gender, fast-food consumption) and perceived family economic status were commonly associated with obesity before and during the COVID-19 pandemic. Physical activity and city type were related to obesity only before the pandemic. Downgraded economic status owing to COVID-19 was adversely related to obesity during the pandemic. Conclusion: Inclusive multilevel support is needed to combat obesity in adolescence during the pandemic and those economically impacted require additional support.

Associations between School Lunch and Obesity in Korean Children and Adolescents Based on the Korea National Health and Nutrition Examination Survey 2017-2019 Data: A Cross-Sectional Study

Obesity in children and adolescents is a serious global problem. In Korea, approximately 35% of students' daily nutrient intake is from school lunch (SL), and all schools provide SL. However, the association between SL and obesity remains controversial. This study examined this association and the daily nutrient intake according to lunch type in Korean children and adolescents. We analyzed 1736 individuals aged 7-18 from the Korea National Health and Nutrition Examination Survey (2017-2019), a cross-sectional study, using logistic regression analysis with odds ratios and 95% confidence intervals. The SL group had higher energy and greater phosphorus, potassium, vitamin A, carotene, vitamin B1, and niacin intake than the non-school lunch (NSL) and skipping lunch (SKL) groups. Protein intake was also higher in the SL group than in the NSL group. The SKL group had higher saturated fatty acid intake, and was thereby 2.5, 1.9, and 2.5 times more likely to have obesity, overweight and obesity, and central obesity (p = 0.0071, 0.0459, 0.0092), respectively, than the SL group. Therefore, the SL group consumed more appropriate nutrients than the NSL and SKL groups, and was less likely to become obese than the SKL group. More in-depth prospective studies are needed to elucidate the causal relationship between SL and obesity.

Dietary Lifestyle of Clinical Nutrition Students Compared with That of Age-Matched Non-Medical Students

Background:

There is an assumption that clinical nutrition (CLN) students should have better nutritional and health statuses and practice healthier lifestyles than other students. However, the effect of pursuing nutritional studies on student dietary lifestyle is not well known.

Objective:

To investigate differences in nutritional status between CLN-major and Administration/Humanities-major (AHM) students as well as determine their sources of health and nutrition-related information.

Method:

This is a descriptive and cross-sectional study that CLN and AHM (mainly English and Arabic majors) students were recruited. Anthropometric measurements were taken, and a questionnaire was administered to assess their dietary lifestyle.

Results:

In total, 160 female students (CLN, 86; AHM, 74) participated in the study. Most students from both groups (>44%) were within the normal body mass index (BMI) range (18.5–24.9 kg/m2); no CLN students had class II or III obesity. No significant difference in BMI between the two groups was observed. CLN students tended to consume breakfast and snacks more than AHM students. Daily fruit and vegetable consumption was significantly higher among CLN than AHM students. No significant difference was found in fried food or water intake between the two groups. CLN students were more involved in high-intensity exercise than their counterparts.

Conclusion:

Our findings suggest that health status and dietary lifestyle among CLN students are influenced by their study major. Obesity is less prevalent, and consumption of healthy foods, such as fruits and vegetables, is higher among CLN students. Future studies investigating the long-term effect of studying CLN on lifestyle and social relations with family and friends are warranted.

Life style, dietary patterns and physical activity in different obesity phenotypes of 2–18 year old children in Tabriz, Iran

BACKGROUND: This study aimed to evaluate the eating habits, physical activity, and body size perception by obesity status among 2–18 year old children in Iran. METHODS: This cross sectional study included 250 children and adolescents aged between 2 and 18. Participants’ anthropometric measurements were measured, adherence of Mediterranean Diet was evaluated by a questionnaire, the Mediterranean Diet Quality Index for children and adolescents (KIDMED), body satisfaction, and perception of body size. RESULTS: Mean age of subjects was 9.07±4.80 years, and 52.4% were girls. The KIDMED index score was 16.3% low, 54.3% moderate and 29.4% good. 72.7% of parents with overweight children and 36.4% with obese children, were perceived that their child was normal, and compared with 58.3% of overweight and 7.7% of obese participants perceived normal body size. There were no significant differences between physical activity in any weight status (p > 0.05) and between boys and girls in the KIDMED index and any of foods intake. There was a significant difference in mean differences of KIDMED index in boys in the four obesity statuses (P = 0.04), as well as in food consumption (P = 0.04), except for pulses in boys and girls. CONCLUSION: The percentage of obesity in boys is more compared to girls, the lowest KIDMED index score is for boys in the obesity group. Therefore, adopting healthier dietary habits and lifestyle in childhood is especially important for boys and also for girls. Registration number: IR.TBZMED.REC.1400.880

Prevalence and Predictors of Overweight and Obesity Among Adolescents in Seremban, Negeri Sembilan, Malaysia

Introduction: Obesity is recognized as a serious public health threat. Recent evidence has warned of the alarming rise in the prevalence of childhood overweight and obesity throughout the world. This study aimed to determine the prevalence of overweight and obesity, and its associations with socio-demographic, behavioral, and psychosocial factors among school-going adolescents in Seremban, Negeri Sembilan.

Methods: Cross-sectional study was conducted. A total of 2,221 adolescents were randomly selected from eight secondary schools. A questionnaire was administered to assess socio-demographic profiles, meal patterns, physical activity level, self-efficacy, self-esteem, body size satisfaction, perception of body weight status, depression, anxiety, stress, and nutrition knowledge. Bodyweight and height were measured and BMI-for-age z scores were computed to determine the body weight status. Bivariate analysis and multivariate logistic regression were used for the data analysis.

Results: The prevalence of overweight among the participants in this study was 17.0%, while the prevalence of obesity was 14.9%. The significant predictors of overweight and obesity in this study were breakfast skipping, low physical activity level, low self-efficacy scores in terms of healthy eating, weight and physical activity, body dissatisfaction, and perception of large body size.

Conclusion: The results emphasize the need to broaden the scope of nutrition guidelines, public health policies, and programs to address overweight and obesity among adolescents in Malaysia. The findings also suggest that health education programs should cover practical advice for modifying healthy eating behaviors, increasing physical activity, as well as matters on body image and body satisfaction.

Influence of a Nutrigenetic Intervention on Self-Efficacy, Emotions, and Rewarding Behaviors in Unhealthy Eating among Mexicans: An Exploratory Pilot Study

The Genome-based Mexican (GENOMEX) diet is a strategy for preventing and managing obesity. Emotion and eating behavior in the context of a nutrigenetic intervention have not been thoroughly studied. We aimed to explore the influence of the GENOMEX diet on emotions, self-efficacy, and rewarding behaviors in unhealthy eating among subjects with risk factors for obesity-related chronic diseases. Twenty-eight subjects included in the six-month GENOMEX intervention answered questions regarding emotions that influence food consumption. Additionally, the Patient Health Questionnaire (PHQ-9) and the Reward-based eating drive scale (RED) were applied. In the study, minimal, mild, moderate, and severe depression were present in 46.4%, 39.3%, 10.7%, and 3.6%, respectively. RED did not change, but it correlated with a higher intake of fats (r² = 0.684, β = 2.066, p = 0.003). Mood influenced unhealthy eating in 71.7% of subjects, and 76.9% experienced binge episodes triggered by anxiety. Sugars were the most consumed foods during binge episodes (42.2%). Both low self-efficacy levels and binge episodes were associated with high consumption of unhealthy foods. After the intervention, 10.7% of subjects reported a high level of self-efficacy. In conclusion, a culturally acceptable and genetically compatible regional Mexican food diet reduced negative emotions and unhealthy eating while increasing self-efficacy.

Autoeficácia alimentar em crianças e adolescentes com sobrepeso ou obesidade: revisão integrativa de instrumentos

RESUMO Objetivo: Descrever as características dos instrumentos para avaliação da autoeficácia alimentar no sobrepeso e na obesidade em crianças e adolescentes. Métodos: Revisão integrativa da literatura, realizada em maio de 2020, em seis bases de dados (PubMed; Web of Science; Scopus; CINAHL, ADOLEC e PsycINFO) com a seguinte estratégia de busca: self-efficacy and (Overweight OR Obesity) and (Child* OR Adolescent). Resultados: Incluíram-se 35 artigos e 21 instrumentos aplicados às crianças de 6 a 9 anos (n=2), em adolescentes de 10 a 19 anos (n=9) e em crianças e adolescentes de 7 a 18 anos (n=10). Os instrumentos têm de 4 a 30 itens e variaram de duas a cinco dimensões, sendo as mais frequentes “alimentação saudável” e “atividade física”. Conclusão: Existem diferentes instrumentos confiáveis destinados à avaliação da autoeficácia alimentar do público adolescente e infantil, o que sinaliza a importância desse construto para prevenção e controle da obesidade e sobrepeso.

Eating self- efficacy in overweight and obese children and adolescents: integrative review of instruments

ABSTRACT Objective: To describe the characteristics of instruments to assess eating self-efficacy in overweight and obesity in children and adolescents. Methods: Integrative literature review, conducted in May 2020, in six databases (PubMed; Web of Science; Scopus; CINAHL, ADOLEC, and PsycINFO) with the following search strategy: Self-efficacy and (Overweight OR Obesity) and (Child* OR Adolescent). Results: The inclusion of thirty-five articles and twenty-one instruments was applied to children 6 to 9 years old (n=2), adolescents 10 to 19 years old (n=9), and children and adolescents 7 to 18 years old (n=10). The instruments have 4 to 30 items and vary from two to five dimensions, the most frequent being “healthy eating” and “physical activity.” Conclusion: There are different reliable instruments designed to assess eating self-efficacy in adolescents and children, indicating the importance of this construct for preventing and controlling obesity and overweight.

Double burden of malnutrition in ethnic minority school-aged children living in mountainous areas of Vietnam and its association with nutritional behavior

BACKGROUND/OBJECTIVES

Although children of ethnic minority groups are experiencing a transition from a predominance of undernutrition to overnutrition, there is little evidence of a dual-malnutrition burden. Therefore, this study examined the double burden of malnutrition among school-aged ethnic minority children living in mountainous areas and its association with their diets.

SUBJECTS/METHODS

A cross-sectional study was conducted from September 2019 to March 2020 in 3 mountainous areas of Northern Vietnam among 1,556 ethnic minority school-aged children. The prevalence of under-nutrition (stunting and thinness) and over-nutrition (overweight and obesity) were measured using the WHO 2006 child growth standards (height-for-age and BMI-for-age Z-score). Nutritional practices were evaluated by the frequency of food consumption based on a 4-level scale.

RESULTS

The percentage of children with stunting and thinness were 14.0% and 5.4%, respectively, while the figure for overweight/obesity was 9.4%. The factors positively associated with stunting were living in a family with more than 2 children or being Muong/other ethnicities compared to the Tay ethnicity. Children who consumed fish/shrimps/crabs or milk weekly/daily were less likely to be undernourished compared to those who never consumed these foods. By contrast, children who never consumed foods rich in vitamin A precursors and vitamin A and fruit or consumed daily snacks/junk food were more likely to be overweight/obese.

CONCLUSIONS

Undernutrition remains a common issue among school-aged children and adolescents of ethnic minority groups, while over-nutrition exists simultaneously. Public health nutrition programs promoting adequate diets and positive lifestyle changes related to nutrition are essential to tackle the double burden of malnutrition among ethnic minority children.

Body Mass Index, Practice of Physical Activity and Lifestyle of Students During COVID-19 Lockdown

PURPOSE

Several factors influence the student's physical activity and lifestyle. The coronavirus disease (COVID-19) lockdown has restricted student's activity and altered their routine lifestyle. This prospective cohort study aimed to determine the significant changes in body mass index (BMI), physical activity, and lifestyle of the students including diet, sleep, and mental health before and during COVID-19 lockdown.

METHODS

The study participants were 628 students studying bachelor's degree programs, between 18 and 30 years of age, both genders from the university of Al-Ahsa, Saudi Arabia. The lockdown began on 23 March and ended on 21 June 2020 in Saudi Arabia. The students were interviewed before (March 2020) and during (June 2020) lockdown. The structured tool included baseline information of the students, anthropometric data, global physical activity questionnaire (GPAQ), dietary recall, Pittsburgh sleep quality index (PSQI), and perceived stress scale (PSP). Chi-square tests were used to associate the baseline information with BMI changes during the lockdown.

RESULTS

BMI of the students showed that 32% increased their weight, 22% lost their weight and 46% maintained the same weight during COVID-19 lockdown. The physical activity significantly decreased and sedentary time increased (p = 0.0001). Regarding the lifestyle components, fast and fried food consumption decreased, and calorie intake increased significantly (p = 0.001). Stress level (p = 0.001) significantly decreased, and sleep level (p = 0.001) increased during lockdown. The variables associated with weight changes were the level of students (p < 0.05) and time spent on social media per day (p < 0.0001).

CONCLUSION

Though half of the students maintained the same BMI during the lockdown, students who increased BMI were associated with physical activity and lifestyle. Hence, health awareness on weight maintenance, active physical activities, and a healthy lifestyle must be created among the students, which help in creating and implementing policies in the future.

Effects of Nutrition Education Interventions in Team Sport Players. A Systematic Review

Considering nutrition education interventions have been frequently implemented in team sport athletes and have shown promising results, this study aimed to summarize the effects of nutrition education interventions on eating habits, nutrition knowledge, body composition, and physical performance in team sport athletes. A systematic review was conducted using the following databases: PubMed/MEDLINE, Web of Science and SPORTDiscus. A total of 14 studies met the inclusion criteria for the review. The methodological quality of included studies was evaluated, and each study was assessed according to the analyzed variables (i.e., eating habits, nutrition knowledge, body composition, and physical performance). Most studies showed improvements in or maintenance of variables used to indicate eating habits, nutrition knowledge, and body composition. However, limited studies examined the effect of nutrition education interventions on physical performance, with existing studies demonstrating disparate results. These findings suggest implementation of nutrition education interventions in team sport athletes could be an effective strategy to improve their eating habits, nutrition knowledge, and body composition. Due to the heterogeneity across the included studies regarding sport modality, competition level, age, and sex of the athletes investigated, as well as the intervention type adopted (i.e., online or face-to-face), it is difficult to establish optimal nutrition education interventions for each analyzed variable.

Relationship between nutrition knowledge, education and other determinants of food intake and lifestyle habits among adolescents from urban and rural secondary schools in Tyrol, Western Austria

Objective:

The aim of this study was to investigate the association of the number of hours of nutrition education and teachers’ qualifications with nutrition knowledge and dietary behaviour in students.

Design:

In this representative cross-sectional study, socio-demographic data, anthropometric measurements, socio-economic status (SES), physical fitness, nutrition knowledge and eating habits were assessed. Differences between groups were tested by χ² and t tests. Multiple linear and logistic regression modelling was used to examine the relationship between demographic characteristics, lifestyle and dietary behaviours, nutrition knowledge, nutrition-trained teachers and number of nutrition lessons.

Setting:

Sixteen secondary schools in urban (n 6) and rural regions (n 10) of Tyrol, Western Austria.

Participants:

Students (n 513) aged 14·2 (sd 0·7) years.

Results:

Higher nutrition knowledge was significantly associated with attending rural school (P = 0·001), having no migration background (P < 0·001), (very) good physical activity behaviour (P = 0·040), non-trained teacher (P = 0·006) but higher number of hours of nutrition education (P = 0·013). Regression models showed that higher nutrition knowledge was independently associated with lower intake of meat and iced tea and higher intake of vegetables and plant-based oils. A higher amount of nutrition education (h/week) was significantly associated with higher intake of dark (wholegrain) bread, lower intake of meat and of energy drinks sweetened with sweeteners.

Conclusions:

Our results suggest that more hours in nutrition education result in higher nutrition knowledge and greater nutrition literacy, which may lead to health-promoting dietary habits. School-based nutrition education can be seen as preventive measure to increase nutritional competences in adolescents independent of their SES.

Determine the BMI levels, self-concept and healthy life behaviours of children during a school based obesity training programme

Sedentary lifestyles and unhealthy nutrition, in particular, cause childhood obesity. The purpose of this semi-experimental research is to determine the changes in body mass index, self-concept, and healthy lifestyle behaviours of children during a training programme to prevent obesity. Children 9 and 15 years old were included from two public secondary schools. A total of 1609 students completed the study in the intervention and control groups (1022 vs 587, respectively). The training programme for the intervention group at the schools had three sessions in 12 weeks and was about obesity, body mass index (BMI) calculation, a healthy lifestyle and coping with stress. Data was collected through a sociodemographic data form, healthy lifestyle behaviours data form, Piers-Harris Children's Self-Concept Scale and weight-height measurements during the first and last weeks of the programme (except for the sociodemographic form). Before training, BMI's of children in the intervention group were higher than in the control group (19.61 ± 3.8 vs 19.00 ± 3.5, respectively). The gap between BMI scores of the groups was narrowed after the training (p > 0.05). The mean score on the Self-Concept Scale increased in the intervention group after the training (63.21 ± 9.5) as compared to before the training (61.16 ± 10.4); whereas in the control group, there were no differences found (p = 0.908). In the intervention group, the number of children who had breakfast after the training (81.1%) increased compared to before the training (74.1%) (p = 0.001). The trainings were provided to students to increase healthy nutrition, physical activity and to decrease sedentary lifestyles.

The Influence of Social Support on Physical Activity in Chinese Adolescents: The Mediating Role of Exercise Self-Efficacy

The purpose of this study was to examine the associations of social support and self-efficacy with physical Activity (PA) and the mediating effect of self-efficacy on the relationship between social support and PA in Chinese adolescents. Participants included a total of 2341 Chinese adolescents (aged 12.75 ± 1.46 years). Self-reported instruments, including the physical activity questionnaire for adolescents, the social support revalued scale and the exercise self-efficacy scale, were used to measure physical activity, social support and exercise self-efficacy. Results showed that social support (r = 0.29, p < 0.05) and exercise self-efficacy (r = 0.43, p < 0.05) were significant and positive predictors of PA among Chinese adolescents, and exercise self-efficacy was a significant mediator in the relationship between social support and PA (standardized effect size = 0.15, p < 0.001). Such findings were evident with similar patterns in both male and female adolescents. The findings of this study have indicated the importance of social support and exercise self-efficacy on PA promotion in adolescents, which will aid the development of effective interventions in this population.

Prevalence and associated factors of overweight and obesity among schoolchildren in Hanoi, Vietnam

BACKGROUND

The prevalence of overweight and obesity (OW/OB) has increased rapidly in Vietnam. This study aimed to elucidate the factors influencing OW/OB among secondary schoolchildren.

METHOD

A survey was conducted in January 2014 in four randomly selected state schools in two Hanoi urban districts, and 821 students in grade six (11-12 years old) participated. Definitions of OW/OB followed the World Health Organization standard cut-offs.

RESULTS

Overall, 4.1% of children were underweight, 59.7% were normal weight, 17.1% were overweight, and 19.1% were obese. The odds of OW/OB were lowest among children whose parents had college/university degrees [father (aOR =0.65, 95% CI: 0.42-1.00); mother (aOR =0.63, 95% CI: 0.41-0.97)] compared with those whose parents had only a primary education. Children with an OW/OB family history had an increased risk of OW/OB. Other associated factors include parental OW/OB and birth weight (BW). The odds of OW/OB were highest among children with parents with OW/OB [father (aOR =2.022, 95% CI: 1.34-3.04); mother (aOR =2.83, 95% CI: 1.51-5.30)] compared with those with normal-weight parents. Children with both parents having OW/OB [both parents (aOR =6.59, 95% CI: 1.28-33.87) had the highest risk, followed by one parent (aOR =2.22, 95% CI: 1.50-3.27)] and then neither parent having OW/OB. Moreover, high-birth-weight children [BW ≥ 3500 g (aOR =1.52, 95% CI: 1.07-2.15)] had greater odds than did normal-birth-weight children. Children who slept 11 h per day [8-11 h (aOR =0.57, 95% CI: 0.40-0.81) or more (aOR =0.44, 95% CI: 0.22-0.87)] had lower OW/OB odds than those who slept 8 h or less. Children with specific positive lifestyle behaviours had lower risk of OW/OB than those who did not engage in positive lifestyle behaviours. The odds were lower among children who exercised for weight reduction (OR = 0.16, 95% CI: 0.11-0.23), lowered food intake (aOR = 0.12, 95% CI: 0.09-0.17), and added vegetables to their diet (aOR = 0.26, 95% CI: 0.19-0.35).

CONCLUSION

The results suggest that parents and children with OW/OB parents or a high BW should be educated to prevent OW/OB at an early stage. Positive lifestyle behaviours should be adopted by the students.

Determinants of Physical Activity for Latino and White Middle School-Aged Children

BACKGROUND

Physical activity (PA) has long been acknowledged to contribute health benefits among children. However, research has consistently shown that PA declines as children grow older. Thus, this study examined the factors which are associated to children's PA in order to identify potential barriers to PA.

METHODS

Using data from the KidQuest Program, we conducted bivariate and multivariate analyses on survey data collected from fifth to seventh grade students in a small Midwestern city.

RESULTS

We found that food knowledge, eating breakfast, and talking with family about eating healthy foods, are positively related to PA. On the other hand, screen time is negatively related to PA. In addition, our results evinced differences between ethnicities and found that Latino children's screen time affects their PA levels more than their white counterpart.

CONCLUSIONS

There are different factors which can be tapped to increase PA among middle school-aged children. Given the differences between the Latino and white samples especially in screen time, schools should consider individualized intervention, rather than a "one size fits all" program, to increase PA participation.

Gender impact on children's knowledge and perceptions regarding cardiovascular disease risk factors: A school-based survey in Greece

BACKGROUND

Cardiovascular disease (CVD) risk factors are adopted during childhood and adolescence. Health literacy at these ages remains the cornerstone of a healthy adult life. The aim of the study was to examine the role of gender regarding CVD risk factors' awareness and to develop an evaluation tool for the assessment of CVD risk factors' knowledge and perception among children.

METHODS

During the school years 2014-2015 and 2015-2016, 1728 students aged 10-12 years (5th and 6th grade), from 5 Greek cities (including Athens metropolitan area), were enrolled; nearly 45% were boys (participation rate varied from 95% to 100% from school to school). Students and their parents completed an anonymous questionnaire; students' somatometric characteristics were also recorded. Schools were randomly selected. Linear regression models were applied to evaluate the impact of children's gender on knowledge and perceptions about CVD risk factors.

RESULTS

Significant higher percentage of correct answers, among girls compared to boys, was revealed regarding the weekly consumption of legumes, the breakfast weekly consumption, and the effects of soft drinks on health (all P < 0.05). As far as CVD risk factors' knowledge, significantly higher percentage of girls than boys also answered that high blood pressure and television viewing are bad for health and particularly for heart-related problems (all P < 0.05). Girls had a significantly higher mean score of 0.304 than boys, after adjusting for several confounders (P = 0.029).

CONCLUSION

Health education programs should take into account gender differences in children's perception and attitudes toward CVD risk factors, in order to increase awareness of children and eventually reduce CVD risk during adulthood.

Snack cost and percentage of body fat in Chinese children and adolescents: a longitudinal study

PURPOSE

Only a few studies examined the relationship between snack cost and change in the percentage of body fat in children. We thus conducted a longitudinal study to investigate whether high snack cost is associated with fast increase in the percentage of body fat in Chinese children.

METHODS

The study included 2368 children (1126 girls and 1242 boys, aged 6-14 years). Percentage of body fat was repeatedly assessed by bioelectrical impedance analysis in 2014 (baseline), 2015 and 2016. Snack cost in 2014 was estimated by self-report associated with purchasing snacks at school and classified into low, moderate, and high group. Association between snack cost and repeated percentage of body fat was analyzed with linear mixed models, adjusting for demographic factors, diet, physical activity, and parental BMI and education.

RESULTS

High snack cost was significantly associated with a fast increase in the percentage of body fat over time (p trend = 0.04). Adjusted difference in annual increase rate in percentage of body fat between the high and low snack cost group was 0.31% [95% confident interval (CI) 0.04%, 0.58%], after adjusting for potential confounders. The impacts of snack cost on change in the percentage of body fat were more pronounced in boys, younger participants and those with higher BMI z-score at the baseline, relative to their counterparts (p interaction < 0.001 for all).

CONCLUSIONS

High snack cost was associated with more gain of body fat in Chinese school-aged children.